Lawn mower



FIG. 1 is a perspective front view of a lawn mower of the present design;

FIG. 2 is a front view of the lawn mower;

FIG. 3 is a top view of the lawn mower;

FIG. 4 is a right side view of the lawn mower;

FIG. 5 is a left side view of the lawn mower; and,

FIG. 6 is a rear view of the lawn mower. 

The ornamental design for a lawn mower, as shown and described. 